What is open drain I2C?
The Open Drain. A defining characteristic of I2C is that every device on the bus must connect to both the clock signal (abbreviated SCL) and the data signal (abbreviated SDA) via open-drain (or open-collector) output drivers.
Is I2C addressable?
The first byte of an I2C transfer contains the slave address and the data direction. Like all data bytes, the address is transferred with the most significant bit first. A seven bit wide address space theoretically allows 128 I2C addresses – however, some addresses are reserved for special purposes.
What is inter integrated communication I2C ):?
The acronym stands for Inter-Integrated-Circuit. I2C is a way of allowing multiple electronic devices (most often low-speed, peripheral integrated circuits) to communicate with each other over a single pair of wires. These wires are also called data lines, or buses.
Why I2C need open drain?
I2C is multi-master and multi-slave protocol. If the lines are not open drain then there may chance that one slave pulling the device low and other slave is trying to pull the same line high. This situation is called as the bus contention.
How does an I2C slave address work in a network?
I2C slave addressing is an important part of enabling communication between I2C master device (s) and slave device (s). The process for an I2C master device to read from an I2C slave device or write to an I2C slave device begins with the I2C master sending a START condition followed by the I2C address of the target slave.
Do you need to know the I2C address scheme?
The answer is simple: in order to properly interface with an I2C slave device, you need to know the I2C address scheme. If you do not know the correct I2C address, you’re going to have difficulty getting an I2C master and I2C slave device to communicate and your I2C development and I2C debugging efforts can hit a roadblock fast.
How is a device identified in the I2C protocol?
Each I2C device (Master/slave) is identified by its 7-bit or 10-bit unique address known as device ID which is provided by device manufacturer only and can act as a transmitter or receiver at a time, depending on the configuration of it.
What is the operation of the I2C bus?
The operation of the I2C bus is a read and write process between master and slave devices. There are mainly divided into 3 processes: Master device writes data to the slave device: The master device reads data from the slave device:
https://www.youtube.com/watch?v=HGX457RA4IU